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  1. Dictionary
    mega-
    /ˈmɛɡə/

    combining form

    • 1. large: "megalith"
    • 2. (in units of measurement) denoting a factor of one million (106): "megahertz"

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    More definitions, origin and scrabble points

  2. dictionary.cambridge.org › dictionary › englishMEGA | English meaning - Cambridge Dictionary

    Mega can be an adjective meaning very good or very big, or a prefix meaning one million or extremely. Learn how to use mega in different contexts and see related words and phrases.

    • Megabit

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    • Mega-Retailer

      MEGA-RETAILER definition: a company that sells a large range...

    • Megawatt

      MEGAWATT definition: 1. a unit for measuring electric power,...

  3. en.wikipedia.org › wiki › Mega-Mega- - Wikipedia

    Mega is a unit prefix in metric systems of units denoting a factor of one million (10 6 or 1 000 000). It has the unit symbol M. It was confirmed for use in the International System of Units (SI) in 1960. Mega comes from Ancient Greek: μέγας, romanized: mégas, lit. 'great'.

  4. www.merriam-webster.com › dictionary › megaMega Definition & Meaning - Merriam-Webster

    Mega is an adjective that means vast, great, or of the highest level of rank, excellence, or importance. It can also be a combining form that means large, million, or to the greatest degree.

  5. www.collinsdictionary.com › dictionary › englishMEGA definition and meaning | Collins English Dictionary

    Mega is an informal word that can be used as an adverb, adjective, or noun to emphasize something as very good, large, or impressive. It can also be a prefix meaning one million or a unit of measurement.

  6. dictionary.cambridge.org › dictionary › learner-englishMEGA- | meaning - Cambridge Learner's Dictionary

    Mega- is an informal prefix that means extremely or one million. Learn how to use it in words like megarich, megabyte, and megaphone.

  7. www.dictionary.com › browse › megaMEGA- Definition & Meaning | Dictionary.com

    Mega- definition: variant of megalo- (megalith); also the initial element in units of measure that are equal to one million of the units denoted by the base word (megahertz). Symbol. See examples of MEGA- used in a sentence.

  8. www.thefreedictionary.com › mega-Mega- - definition of mega- by The Free Dictionary

    mega-. a combining form meaning “extremely large, huge,” orig. a variant of megalo- ( megalith ), used also in the names of units of measure equal to one million of a given base unit ( megahertz; megaton ), and by extension, now freely used to form words denoting very large quantities ( megabucks ), large things ( megastructure) or, more ...